A pipeline auxiliary welding device

Abstract

The utility model discloses a pipeline auxiliary welding device, including two auxiliary welding units, the auxiliary welding units are both sleeved on the pipe mouth end; the auxiliary welding unit includes a juxtaposition component, a displacement component and a connection component, the juxtaposition component is sleeved on the pipe mouth end, the displacement component is threadedly installed on the four sides of the juxtaposition component, and there is one displacement component on each of the four sides of the juxtaposition component, and the connection component is slidably installed on the juxtaposition component. The utility model has a flush docking of the pipe mouths at both ends of the docking, and the cone cylinder of the auxiliary rod passes through to achieve docking. The auxiliary rod supports the first arc-shaped juxtaposition plate and the second arc-shaped juxtaposition plate to maintain balance, so that the pipe mouths are aligned with each other to avoid a small gap. When welding, misaligned welding occurs, which reduces the quality and service life of welding and leaves safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline auxiliary welding, in particular to a pipeline auxiliary welding device. Background Art

[0002] Pipeline auxiliary welding devices refer to a series of special tools and equipment used in the process of pipeline welding to improve welding quality and efficiency, ensure welding operation safety, and accurately control welding parameters and weld formation; these devices can help welders complete high-quality butt welding, fillet welding, cladding and other work.

[0003] When the pipes are not aligned during welding, misalignment occurs, which will bring a series of serious hazards during welding, including:

[0004] 1. Stress concentration: Misaligned welding will lead to uneven stress distribution at the weld, forming stress concentration points, which greatly reduces the bearing capacity of the weld and the overall rigidity of the structure, and increases the risk of weld cracking.

[0005] 2. Reduce welding quality: When welding with offset joints, it is difficult for the welder to ensure sufficient penetration and filling of the weld, and the weld is poorly formed, which may cause welding defects such as lack of fusion and lack of penetration. These defects seriously affect the mechanical properties and sealing properties of the weld.

[0006] 3. Reduce service life: Due to incomplete welding, the misaligned joints are prone to become the origin of corrosion and fatigue cracks, which accelerates the corrosion rate of the pipeline and shortens the service life of the pipeline.

[0007] 4. Safety hazards: In pressure pipelines or pipelines transporting dangerous media, misaligned welding may cause leakage, and in severe cases, bursting may occur, causing significant property losses and personal injuries.

[0008] 5. Additional costs: Correcting the misalignment requires additional labor, time and material costs. If it is not corrected and welded directly, the pipe may need to be repaired or replaced later.

[0009] Therefore, how to provide a pipeline auxiliary welding device is a problem that technical personnel in this field need to solve urgently. Utility Model Content

[0010] One purpose of the utility model is to provide a pipeline auxiliary welding device. The utility model has the function of butting the pipe openings at both ends flush with each other, the cone column of the auxiliary rod is passed through to achieve butt joint, the auxiliary rod supports the first arc-shaped connecting plate and the second arc-shaped connecting plate to maintain balance, so that the pipe openings are aligned with each other to avoid a small gap, which will cause misaligned welding during welding, reduce the quality of welding, service life and leave safety hazards.

[0011] According to an embodiment of the utility model, a pipeline auxiliary welding device comprises two auxiliary welding units, and the auxiliary welding units are both sleeved on the pipe end.

[0012] The auxiliary welding unit includes a parallel connection component, a displacement component and a connection component. The parallel connection component is sleeved on the pipe end, the displacement component is threadedly installed on the four sides of the parallel connection component, and there is one displacement component on each of the four sides of the parallel connection component, and the connection component is slidably installed on the parallel connection component.

[0013] Furthermore, the parallel connection assembly includes a first arc-shaped parallel connection plate and a second arc-shaped parallel connection plate, and the first arc-shaped parallel connection plate is rotatably mounted on both ends of the second arc-shaped parallel connection plate.

[0014] Further, first adapters are fixedly provided at both ends of the first arc-shaped connecting plate, a first connecting hole is opened inside the first adapter, first guide holes are opened on both sides of the first arc-shaped connecting plate, first threaded holes are opened on both sides of the first arc-shaped connecting plate, and a first auxiliary hole is opened on the outer surface of the first arc-shaped connecting plate.

[0015] Furthermore, second adapters are fixedly provided at both ends of the second arc-shaped connecting plate, a second connecting hole is opened inside the second adapter, second guide holes are opened on both sides of the second arc-shaped connecting plate, second threaded holes are opened on both sides of the second arc-shaped connecting plate, and a second auxiliary hole is opened on the outer surface of the second arc-shaped connecting plate.

[0016] Furthermore, the parallel connection assembly also includes a bolt rod, both ends of the bolt rod pass through the first adapter through the first connecting hole, and both ends of the bolt rod pass through the second adapter through the second connecting hole.

[0017] Furthermore, the displacement assembly includes a threaded rod, a turntable and a bracket, wherein the threaded rod is threadedly installed in the first threaded hole and the second threaded hole, the top of the turntable is rotatably installed on the threaded end of the threaded rod, and the top of the bracket is fixedly installed on the bottom of the turntable.

[0018] Furthermore, the displacement assembly also includes side plates, guide rods and rolling wheels, wherein the side plates are fixedly mounted on both sides of the bracket, the bottom of the bracket is fixedly mounted on the top of the side plates, the guide rods are slidably mounted in the first guide holes and the second guide holes, and the rolling wheels are rotatably mounted on the bottom end of the bracket.

[0019] Furthermore, the connecting assembly includes an auxiliary rod, a torsion rod and a conical cylinder, wherein the auxiliary rod is slidably installed in the first auxiliary hole and the second auxiliary hole, the torsion rod is fixedly installed on one end of the auxiliary rod, and the conical cylinder is fixedly installed on the other end of the auxiliary rod.

[0020] The beneficial effects of the utility model are:

[0021] The utility model has the advantages of flush docking of the pipe openings at both ends of the docking, the cone column of the auxiliary rod is passed through to realize the docking, and the auxiliary rod supports the first arc-shaped connecting plate and the second arc-shaped connecting plate to maintain balance, so that the pipe openings are aligned with each other to avoid small gaps. When welding, misaligned welding occurs, which reduces the quality of welding and the service life and leaves safety hazards.

[0022] The utility model rotates the threaded rod, and the threaded rod rotates forward or backward on the first arc-shaped connecting plate and the second arc-shaped connecting plate to drive the turntable and the bracket to move. The threaded rod is rotatably connected to the turntable, and the guide rod is used to limit the bracket to avoid rotation when the threaded rod rotates forward or backward. The rotation of the threaded rod drives the rolling wheel to adjust the surface distance of the pipeline, so that the first arc-shaped connecting plate and the second arc-shaped connecting plate can be displaced along the length of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the overall working structure of a pipeline auxiliary welding device proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of a pipeline auxiliary welding device proposed by the utility model;

[0026] Figure 3 A pipeline auxiliary welding device proposed by the utility model Figure 2 A magnified image of point A;

[0027] Figure 4 This is a structural schematic diagram of a first arc-shaped connecting plate of a pipeline auxiliary welding device proposed by the utility model;

[0028] Figure 5 The utility model provides a schematic structural diagram of a second arc-shaped connecting plate of a pipeline auxiliary welding device.

[0029] In the figure: 1. Auxiliary welding unit; 2. Parallel connection assembly; 2.1.1. First arc-shaped parallel connection plate; 2.1.2. First adapter; 2.1.3. First guide hole; 2.1.4. First threaded hole; 2.1.5. First auxiliary hole; 2.2. Second arc-shaped parallel connection plate; 2.2.1. Second adapter; 2.2.2. Second connection hole; 2.2.3. Second guide hole; 2.2.4. Second threaded hole; 2.2.5. Second auxiliary hole; 2.3. Bolt rod; 3. Displacement assembly; 3.1. Threaded rod; 3.2. Turntable; 3.3. Bracket; 3.4. Side plate; 3.5. Guide rod; 3.6. Rolling wheel; 4. Connection assembly; 4.1. Auxiliary rod; 4.2. Torsion rod; 4.3. Cone cylinder. DETAILED DESCRIPTION

[0030] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0031] Please refer to Figures 1 to 5 The utility model provides a pipeline auxiliary welding device, comprising two auxiliary welding units 1, the auxiliary welding units 1 are sleeved on the pipe ends, and the auxiliary welding units 1 are arranged at two pipe ends that need to be butt-jointed.

[0032] Specifically, the auxiliary welding unit 1 includes a parallel connection component 2, a displacement component 3 and a connection component 4. The parallel connection component 2 is sleeved on the pipe end, and the parallel connection component 2 is used to be sleeved on the pipe. The displacement component 3 is threadedly installed on the four sides of the parallel connection component 2, and there is one displacement component 3 on each of the four sides of the parallel connection component 2. The displacement component 3 can be displaced on the pipe. The connection component 4 is slidably installed on the parallel connection component 2, and the connection component 4 is used to align two pipe ends that need to be connected.

[0033] The shunt assembly 2 comprises a first arc-shaped shunt plate 2.1 and a second arc-shaped shunt plate 2.2. The first arc-shaped shunt plate 2.1 is rotatably mounted on both ends of the second arc-shaped shunt plate 2.2. Both ends of the first arc-shaped shunt plate 2.1 are fixedly provided with first adapters 2.1.1. The first adapters 2.1.1 are provided with first connecting holes 2.1.2 inside. Both sides of the first arc-shaped shunt plate 2.1 are provided with first guide holes 2.1.3. Both sides of the first arc-shaped shunt plate 2.1 are provided with first threaded holes 2.1. 4. A first auxiliary hole 2.1.5 is provided on the outer surface of the first arc-shaped paralleling plate 2.1; second adapters 2.2.1 are fixedly provided at both ends of the second arc-shaped paralleling plate 2.2, a second connecting hole 2.2.2 is provided inside the second adapter 2.2.1, second guide holes 2.2.3 are provided on both sides of the second arc-shaped paralleling plate 2.2, second threaded holes 2.2.4 are provided on both sides of the second arc-shaped paralleling plate 2.2, and a second auxiliary hole 2.2.5 is provided on the outer surface of the second arc-shaped paralleling plate 2.2.

[0034] The parallel connection assembly 2 further comprises a bolt rod 2.3, both ends of which pass through the first connecting hole 2.1.2 and penetrate the first adapter 2.1.1, and both ends of the bolt rod 2.3 pass through the second connecting hole 2.2.2 and penetrate the second adapter 2.2.1.

[0035] Furthermore, the first arc-shaped connecting plate 2.1 and the second arc-shaped connecting plate 2.2 are spliced, and then the two ends of the first arc-shaped connecting plate 2.1 and the second arc-shaped connecting plate 2.2 are threaded together through the bolt rod 2.3, so that the first arc-shaped connecting plate 2.1 and the second arc-shaped connecting plate 2.2 form a complete ring and are sleeved on the pipe.

[0036] Furthermore, the displacement assembly 3 includes a threaded rod 3.1, a turntable 3.2 and a bracket 3.3, wherein the threaded rod 3.1 is threadedly installed in the first threaded hole 2.1.4 and the second threaded hole 2.2.4, the threaded rod 3.1 is threadedly connected to the first arc-shaped parallel plate 2.1 and the second arc-shaped parallel plate 2.2, and the turntable 3.2 and the bracket 3.3 are displaced by screwing the threaded rod 3.1 in or out, the top of the turntable 3.2 is rotatably installed on the threaded end of the threaded rod 3.1, and the top of the bracket 3.3 is fixedly installed on the bottom of the turntable 3.2.

[0037] The displacement assembly 3 also includes side plates 3.4, guide rods 3.5 and rolling wheels 3.6, wherein the side plates 3.4 are fixedly mounted on both sides of the bracket 3.3, the bottom of the bracket 3.3 is fixedly mounted on the top of the side plates 3.4, the guide rods 3.5 are slidably mounted in the first guide holes 2.1.3 and the second guide holes 2.2.3, the guide rods 3.5 are used to limit the screwing in or out of the threaded rod 3.1 to drive the bracket 3.3 to rotate, and the rolling wheels 3.6 are rotatably mounted on the bottom end of the bracket 3.3, the rolling wheels 3.6 are attached to the surface of the pipe, and can be displaced along the length of the pipe.

[0038] More specifically, by rotating the threaded rod 3.1, the threaded rod 3.1 rotates forward or backward on the first arc-shaped connecting plate 2.1 and the second arc-shaped connecting plate 2.2, driving the turntable 3.2 and the bracket 3.3 to move. The threaded rod 3.1 is rotatably connected to the turntable 3.2. The guide rod 3.5 is used to limit the bracket 3.3 from rotating when the threaded rod 3.1 rotates forward or backward. The rotation of the threaded rod 3.1 drives the rolling wheel 3.6 to adjust the surface distance of the pipeline, so that the first arc-shaped connecting plate 2.1 and the second arc-shaped connecting plate 2.2 can be displaced along the length of the pipeline.

[0039] More specifically, the connecting assembly 4 includes an auxiliary rod 4.1, a torsion rod 4.2 and a conical cylinder 4.3, wherein the auxiliary rod 4.1 is slidably mounted in the first auxiliary hole 2.1.5 and the second auxiliary hole 2.2.5, the torsion rod 4.2 is fixedly mounted on one end of the auxiliary rod 4.1, and the conical cylinder 4.3 is fixedly mounted on the other end of the auxiliary rod 4.1.

[0040] Furthermore, the auxiliary rod 4.1 passes through the first auxiliary hole 2.1.5 and passes through the cone cylinder 4.3 of the auxiliary rod 4.1 to achieve docking. The auxiliary rod 4.1 supports the first arc-shaped connecting plate 2.1 and the second arc-shaped connecting plate 2.2 to maintain balance, so that the pipe openings are aligned with each other to avoid small gaps, which would cause misaligned welding during welding, reduce welding quality, service life and leave safety hazards.

[0041] Misaligned welding can lead to uneven stress distribution at the weld, forming stress concentration points, which greatly reduces the bearing capacity of the weld and the overall rigidity of the structure, and increases the risk of weld cracking; when misaligned welding, it is difficult for welders to ensure sufficient penetration and filling of the weld, and the weld is poorly formed, which may cause welding defects such as incomplete fusion and incomplete penetration. These defects seriously affect the mechanical properties and sealing properties of the weld; due to incomplete welding, the misaligned joints are prone to become the origin of corrosion and fatigue cracks, which accelerates the corrosion rate of the pipeline and shortens the service life of the pipeline; in pressure pipelines or pipelines transporting hazardous media, misaligned welding may cause leakage, and in severe cases, bursting may occur, causing significant property losses and personal injuries.

[0042] Therefore, when welding pipelines, it is necessary to ensure that the pipe ends are aligned, and the allowable misalignment should be strictly controlled within the specified range to ensure the welding quality and safe operation of the pipeline and avoid safety hazards caused by misaligned welding.

[0043] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A pipeline auxiliary welding device, characterized in that: It comprises two auxiliary welding units (1), each of which is sleeved on the end of the pipe mouth; The auxiliary welding unit (1) comprises a parallel connection component (2), a displacement component (3) and a connection component (4); the parallel connection component (2) is sleeved on the end of the pipe mouth; the parallel connection component (2) comprises a first arc-shaped parallel connection plate (2.1) and a second arc-shaped parallel connection plate (2.2); the first arc-shaped parallel connection plate (2.1) is rotatably mounted on both ends of the second arc-shaped parallel connection plate (2.2); the displacement component (3) is threadedly mounted on four sides of the parallel connection component (2); and the displacement component (3) is disposed on the parallel connection component (2). There is one on each of the four sides, and the displacement assembly (3) comprises a threaded rod (3.1), a turntable (3.2) and a bracket (3.3), wherein the threaded rod (3.1) is threadedly mounted in a first threaded hole (2.1.4) and a second threaded hole (2.2.4), the top of the turntable (3.2) is rotatably mounted on the threaded end of the threaded rod (3.1), the top of the bracket (3.3) is fixedly mounted on the bottom of the turntable (3.2), and the connection assembly (4) is slidably mounted on the parallel connection assembly (2).

2. A pipeline auxiliary welding device according to claim 1, characterized in that: Both ends of the first arc-shaped parallel connection plate (2.1) are fixedly provided with first adapters (2.1.1), a first connection hole (2.1.2) is provided inside the first adapter (2.1.1), first guide holes (2.1.3) are provided on both sides of the first arc-shaped parallel connection plate (2.1), first threaded holes (2.1.4) are provided on both sides of the first arc-shaped parallel connection plate (2.1), and a first auxiliary hole (2.1.5) is provided on the outer surface of the first arc-shaped parallel connection plate (2.1).

3. A pipeline auxiliary welding device according to claim 1, characterized in that: Second adapters (2.2.1) are fixedly provided at both ends of the second arc-shaped connecting plate (2.2); a second connecting hole (2.2.2) is provided inside the second adapter (2.2.1); second guide holes (2.2.3) are provided on both sides of the second arc-shaped connecting plate (2.2); second threaded holes (2.2.4) are provided on both sides of the second arc-shaped connecting plate (2.2); and a second auxiliary hole (2.2.5) is provided on the outer surface of the second arc-shaped connecting plate (2.2).

4. A pipeline auxiliary welding device according to claim 2, characterized in that: The parallel connection assembly (2) further comprises a bolt rod (2.3), both ends of the bolt rod (2.3) passing through the first connecting hole (2.1.2) and penetrating the first adapter (2.1.1), and both ends of the bolt rod (2.3) passing through the second connecting hole (2.2.2) and penetrating the second adapter (2.2.1).

5. The pipeline auxiliary welding device according to claim 1, characterized in that: The displacement assembly (3) further comprises a side plate (3.4), a guide rod (3.5) and a rolling wheel (3.6), wherein the side plate (3.4) is fixedly mounted on both sides of the bracket (3.3), the bottom of the bracket (3.3) is fixedly mounted on the top of the side plate (3.4), the guide rod (3.5) is slidably mounted in the first guide hole (2.1.3) and the second guide hole (2.2.3), and the rolling wheel (3.6) is rotatably mounted on the bottom end of the bracket (3.3).

6. The pipeline auxiliary welding device according to claim 1, characterized in that: The connecting assembly (4) comprises an auxiliary rod (4.1), a torsion rod (4.2) and a conical column (4.3), wherein the auxiliary rod (4.1) is slidably mounted in a first auxiliary hole (2.1.5) and a second auxiliary hole (2.2.5), the torsion rod (4.2) is fixedly mounted on one end of the auxiliary rod (4.1), and the conical column (4.3) is fixedly mounted on the other end of the auxiliary rod (4.1).

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